Device for operating adding-machines.



No. 629,38l. Patented July 25, I899.

J. H. LUVERING.

DEVICE FOR OPERATING ADDING MACHINES.

(Application filed. July 26, 1898.)

(No Modu l.)

,WW O 1 UNITED STATES "PATENT OFFICE.

JOHN H. LOVERING, OF MALDEN, MASSACHUSETTS.

DEVICE FOR OPERATING ADDING-MACHINES.

SIECIFICATION forming part of Letters Patent No. 629,381, dated July 25,1899.

Application filed July 25, 1898. Serial Nor 686,809. (No model.)

To alZ whom it may concern: A represents the adding-machine, mounted Beit known that 1, JOHN H. LOVERING, a upon a table, as usual when in use,and B the citizen of the United States, residing at Maloperating-leveron the right-hand side of the 5 den, in the county of Middlesex andState of machine. All the other parts indicated by 5 Massachusetts, haveinvented a new and useletters in the drawing are parts of my attachfulImprovement in Devices for Operating ment. Adding-Machines, of which thefollowing is a C is an arm attached to the lever B. specification. D and(Z are connecting-chains which secure My invention relates to afoot-power applia flexible connection between the compound IO ance foruse upon certain machines requiring lever E and the arm 0 and thetreadle. The

the movement of a lever, and is especially compound lever E is composedof the horiadapted for use in throwing the lever used in zontal parts Eand E, the link K, and the the machine called the Burroughsaddingcross-arm M. The cross-arm M is pivoted in machine. In thesemachines the operators the center, and the pivot is connected with 15fingers press down keys to register the desired the table on which themachine rests. This figures, and when it is desired to add the arm M ispivoted to the lever E at M and to amounts and record their sum this isdone by the lever E" at M. The ends of the link K a forward movement ofthe operating-lever. are pivoted to the ends of the arms E and Thislever is made to return to its original E. The treadle F ispreferablypivoted at 20 position by means of certain springs inside G to the legof the table, and the other end the machine. As the machine is a presentof I moves within the guard II, which keeps operated the person using itmust take his it against another leg of the table; but any right handaway from the keyboard, which other means of holding the treadle to thetable is on top of the machine, and reach around on which the machinerests maybe used. For

2 5 to the back part of the right side of the ma convenience of use thechain d is attached to chine to find the lever and pull it forward and astirrup which is fastened to the treadle F downward. This operationcauses delay and and the operator places his foot within the some skillin the operator and considerable stirrup. In place of the chain (Z a rodmay physical exertion, since the lever must be be used to connect thetreadle with the lower 30 pulled against the force of the springs insidepart E of the compound lever.

the machine. This machine is used in most lVhen the'operator has madecertain figures cases by young women, and the physical eXerand desiresto record their sum, he moves the tion of pulling the lever so often isvery tiretreadle F, and the compound lever, with its some and ofteninjurious to the operator. On connections,produces such a movement ofthe 35 account of the construction of this machine arm 0 that theoperating-lever B is pulled and the peculiar action of the spring whichforward in such manner as to make the maacts upon the operating-lever aspecial movechine do its work of recording the sum of the ment of thelever is required. The lever B figures made, 0 is pivoted at its lowerend, and when it has As the operating-lever has to be moved very 40 beenpulled forward for the purpose of operfrequently, need has been found ofsome apating the machine it is returned to its initial piiance forworking it other than the hand of position, as shown in the drawing, bysprings the operator; but many appliances that have within the bodyofthe machine. Ihave found been tried have failed to secure the peculiar 5by trial that no one of the treadles now in use motion of theoperating-lever needed in the 5 will perform'the operation of throwingthe Burroughs adding-machine lever in this machine. My appliance may beI am aware that there are a great many adapted for use upon othermachines; but it kinds of pedals having levers adapted for opisconstructed especially for the requirements erating certain parts ofmachines, and I do roo of the Burroughs adding-machine. I have notclaim, broadly, a combination of a treadle 5o attained these objects bymeans of the mechwith a compound lever.

anisin illustrated in the accompanying draw-- hat I do claim as myinvention, and Ge ing. sire to secure by Letters Patent, is-

1. In combination with a machine operated by a movable bar the arm C,the connectingchains D and cl, the compound lever E and the treadle 13substantially as shown or described.

2. In combination with an adding-machine operated by a swinging lever,the arm 0, the compound lever E and a treadle, with means for attachingthe treadle to the lever and the lever to the arm C, so that the motionof the treadle will be communicated to the arm 0, substantially as shownor described.

3. In combination with an adding-machine operated by a swinging lever,the arm C, the compound lever E, the treadle F, and means Vitnesses:

CHAS. ALLEN TABER, ERNEST B. CONANT.

